2x30 Watt Powered On-Wall Speaker System SPK-OCA504PB The SPK-OCA504 is a powered two-way speaker system designed for indoor wall mounting. The system accepts a line-level stereo input and amplifies it using a built-in amplifier and outputs a speaker signal to the passive speaker. Features: Active Loudspeaker - Stereo 2x30W amplifier and volume control. Inputs - Line-level stereo audio on RCA connectors and a 3.5mm mini jack, stereo audio on a terminal block connector. Outputs - Speaker output to passive speaker, sub-woofer, looping output for chaining to other speaker pairs. Audio Level Controls - Volume, treble and bass. Magnetically Shielded. Enhanced Bass Reflex. Auto Power - Shuts off when system is not in use, indicated by a LED. Automatic Input Voltage Selector - 90 to 240V AC, 50 to 60Hz. Indoor Wall Mounting. Available in Black or White. Weight Per Single Speaker - Active speaker 3.57kg (7.87lbs) approx., passive speaker 2.53kg (5.58lbs) approx. Package - 1 pair of U-shaped rotating mounting brackets with 4 mounting bracket screws, 1.8m power cord, 4m loudspeaker cable and a 2m RCA cable. Specifications:INPUTS: Line level stereo audio on a 3.5mm connector, line level stereo audio on RCA connectors (L&R), and a terminal block connector. OUTPUTS: 1 speaker on a terminal block (to connect to the external passive speaker), 1 active sub-woofer on a 3.5mm connector, 1 looping output on a 3.5mm connector. SPEAKER TYPE: Two-way bass reflex, on-wall speaker. WOOFER: 133mm (5.25in) polypropylene cone/rubber surround. TWEETER: 15.9mm (0.625in) silk dome tweeter. PASSIVE: 27mm (1.1in) piezo dome. FREQUENCY RESPONSE: 75Hz to 20kHz. IMPEDANCE: 4?. SENSITIVITY: 102dB ±3dB @1W-1m. BUILT-IN POWER AMPLIFIER: 2x30W in active speaker. CONTROLS: Volume, bass and treble control knobs. UNIVERSAL POWER SUPPLY: 100 or 240V AC, 50 or 60Hz (selectable). MATERIALS: Frame, grill and brackets steel; housing ABS. INSTALLATION CLEARANCE: Front panel to wall (including mounting bracket): 20cm; back panel to wall (including mounting bracket): 3cm. DIMENSIONS: Cabinet, bracket, knob: 17.2cm x 18.3cm x 26.5cm (6.8" x 7.2" x 10.4") W, D, H. WEIGHT: Active speaker 2.7kg (5.9lbs) approx; passive speaker 2.2kg (4.8lbs) approx. ACCESSORIES: 2 mounting brackets (fixed and rotating), 3m (9.8ft) power cord and a loudspeaker cable.